Update amarok.SlackBuild

Apps/amarok/amarok.SlackBuild

@@ -128,14 +128,7 @@ if [ "$P1" == "--download" ]; then
 fi
 
 cd $TMP/tmp-$PRGNAM
-echo "Extracting the source archive(s) for $PRGNAM..."
+bsdtar -xvf ${SOURCE}
-if $(file ${SOURCE} | grep -qi ": 7-zip"); then
-  7za x ${SOURCE}
-elif $(file ${SOURCE} | grep -qi ": zip"); then
-  unzip ${SOURCE}
-else
-  tar -xvf ${SOURCE}
-fi
 
 cd applications
 cd ${PRGNAM}